media: select airvpn by country for wireguard

custom_helm_charts/gluetun/README.md

@@ -7,7 +7,8 @@ Service endpoints:
 AirVPN WireGuard values:
 - Update `helm-values/gluetun_values.yaml`:
   - `env.WIREGUARD_ADDRESSES` -> WireGuard tunnel address(es) (IPv4 /32 and optional IPv6)
-  - `env.SERVER_HOSTNAMES` -> stable AirVPN server hostname
+  - `env.SERVER_COUNTRIES` -> recommended AirVPN server selection (e.g. Netherlands)
+  - If your cluster does not support IPv6, remove the IPv6 address from `env.WIREGUARD_ADDRESSES`.
 - Create a Secret named `gluetun-wireguard` with key `WIREGUARD_PRIVATE_KEY` from your AirVPN WireGuard config (do not commit the key).
   - Add `WIREGUARD_PRESHARED_KEY` from the same AirVPN WireGuard config.
   - `helm-values/gluetun_values.yaml` sets `secret.create: false` so the chart does not create a placeholder secret.

custom_helm_charts/gluetun/values.yaml

@@ -22,7 +22,7 @@ env:
         key: WIREGUARD_PRESHARED_KEY
   - name: WIREGUARD_ADDRESSES
     value: "REPLACE_ME"
-  - name: SERVER_HOSTNAMES
+  - name: SERVER_COUNTRIES
     value: "REPLACE_ME"
   - name: HTTPPROXY
     value: "on"